What you've got (according to the debug image) is an object array containing a string array. So you need something like:
Object[] objects = (Object[]) values;
String[] strings = (String[]) objects[0];
You haven't shown the type of values - if this is already Object[] then you could just use (String[])values[0].
Of course even with the cast to Object[] you could still do it in one statement, but it's ugly:
String[] strings = (String[]) ((Object[])values)[0];